disp

#!/bin/bash

DISPER=$(which disper 2>/dev/null)
XRANDR=$(which xrandr 2>/dev/null)
NVSETTINGS=$(which nvidia-settings 2>/dev/null)
XRANDR_ROT="-o normal"

XRANDR_L="$(xrandr | grep LVDS | cut -d' ' -f1)"
# this may be DP2 or something else:
XRANDR_E="$(xrandr | egrep "^DP.*\bconnected\b" | cut -d' ' -f1)"

if [ "$1" = "l" ]
then
    echo "Switching to laptop display"
    DISPER_OPT="-s"
    XRANDR_OPT="--output $XRANDR_L --auto --output $XRANDR_E --off"
elif [ "$1" = "e" ] || [ "$1" = "d" ]
then
    echo "Switching to dock display"
    DISPER_OPT="-S"
    XRANDR_OPT="--output $XRANDR_E --auto --output $XRANDR_L --off"
else
    echo "Usage: $0 D [R]"
    echo "where D is l for laptop display or d for dock display"
    echo "and R is l for "left" portrait orientation"
    echo "Listing displays:"
    DISPER_OPT="-l"
    XRANDR_OPT=""
    XRANDR_ROT=""
fi
if [ "$2" = "l" ]
then
    echo "Orientation: left"
    XRANDR_ROT="-o left"
fi

#TODO: apparently this tries executing nvidia-settings when it's not found:
if [ -f "$NVSETTINGS" -a "$(nvidia-settings --glxinfo | grep NVIDIA)x" != "x" ]
then
    echo "Detected NVIDIA driver, using disper" >&2
    $DISPER $DISPER_OPT
    $XRANDR $XRANDR_ROT
else
    echo "Using xrandr" >&2
    $XRANDR $XRANDR_OPT $XRANDR_ROT
fi